Heathrow Airport was warned about the "resilience" of its power supply in the days before a fire which shut down the airport for over a day last month. Nigel Wicking, chief executive of the Heathrow Airline Operators' Committee, told a group of MPs on Wednesday that he spoke to the Team Heathrow director on 15 March about his concerns.

The official told a parliamentary committee that he had raised concerns about the resilience of Heathrow’s electricity supply just days before a fire forced the airport to shut down.

Heathrow bosses were warned of the risk of the failure of a power substation days before an electrical fire shut the airport for almost 24 hours, MPs have been told.Nigel Wicking, chief executive of the Heathrow Airline Operators’ Committee (HAOC),